You need 2 things to set your speakers up properly. The stands and the owners manual. There's no way you are going to get it right otherwise. If the seller didn't include the manual, you can download it from Vandersteen's web site. Read through it and you'll see exactly what I'm talking about. Just follow the formula he gives you. From inside edge to inside edge 6 feet apart is a good starting point. You can go a little wider if you have to. As far as the amp goes, you're OK for power. If you had a pair of 2's, you could make a case for more power, but the 1's just don't need it.
"I feel like I need to bring them closer together, probably around 55-60 inches apart because the soundstage sounds very thin in the middle and pulled out toward the edges."
Once you get the speakers higher up on the stands and set the back tilt, that problem will go away. Also, if you bought a new amp, its probably not broken in yet. Make sure you get at least 100 hours on it before you do any serious listening.
"I feel like I need to bring them closer together, probably around 55-60 inches apart because the soundstage sounds very thin in the middle and pulled out toward the edges."
Once you get the speakers higher up on the stands and set the back tilt, that problem will go away. Also, if you bought a new amp, its probably not broken in yet. Make sure you get at least 100 hours on it before you do any serious listening.